Draft equalizer



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KORBINIAN r'lHALI-IAMMER, 0F COON RAPIDS, IOWA.

DRAFT EQUALIZER.

Application filed September 22, 1923. Serial No. 664,170.

To all whom t may concer/n Be it knownthat 1, Konninnin THALHAM- Minn, citizen of the .United States, residing at Coon Rapids, in the county of Carroll and State of Iowa, have invented certain new and useful Improvements in Draft Equalizers, of which the :following is a specification.

This invention relates to animal draft appliances, and has particular reference to an improved draft equalizer' of the four horse type wherein the horses are hitched, so as to be abreast or in side by side relation.

The primary object of the invention is to generally simplify and improve devices of the above kind whereby the same may meet with all of the requirements for a successful commercial use.

nnother object of the invention is to provide a draft equalizer of the above type which embraces the desired qualities of simplicity, durability and efficiency in operation.

Another object is to provide a draft equalizer of the above kind wherein provision is made for adjusting the relationship between the several elements of the device so that the latter will operate with eXtreme efficiency under all conditions met in use.

Other objects will appear as the nature of the invention is better understood, and the same consists in the novel form, combination and` arrangement of parts, hereinafter more fully described, shown in the accompanying drawing and claimed.

1n the drawing, wherein like reference characters indicate corresponding parts throughout the several views:

Figure 1 is a top plan view, partly broken away, of a draft equalizer constructed in accordance with the present invention.

Figure 2 is a longitudinal sectional view, taken substantially upon the line 2 2 of Figure 1, and

Figure 3 is a view similar to Figure 2, taken substantially upon the line 3--3 of Figure 1.

Referring more in detail to the drawing, the invention embodies a transverse beam or cross bar 5 having levers 6 pivoted to the ends thereof for horizontal swinging movement, as at 7, the longer forwardly projecting ends of said lever 6 having double trees 8 pivoted thereto for horizontal swinging movement as at 9, and single trees 10 being in turn connected with the ends of the double trees 8 by means of links 11 that have their forward ends pivoted as at 412 intermediate the single trees 10 and their rear endspivoted as at 13 to the ends of the double trees 8. The levers 6 are composed of superposed straps as clearly shown in Figure 3 positioned against the upper and lower surfaces of the cross bar 5 and double trees S, while the links 11 are also preferably similarly constructed whereby the single trees are flexibly connected to the double trees 1n a well. known manner.

A draw bar 14 has its forward end pivoted i to the cross bar 5 nearer one end of the latter than the other, as Vat 15, and this draw bar extends longitudinally and rear- Y wardly from the cross bar 5 where. it is provided at its rear end with means, as at 16,

for connection withthe beam or draw bar of' the implement to be drawn. The draw bar 14 preferably embodies superimposed straps having their forward ends respectively disposed above and below the upper and lower surfaces of the cross bar 5 and having their rear ends rigidly connected in spaced relation by means of a bolt 17 passing therethrough and having a spacing sleeve 18 mounted thereon between the straps.` Disposed between t-hel straps ofthe draw bar 14 is a lever 19 that is pivotally connected to the cross bar 5 by means of the pivot connection 15 which consists of a bolt passing through thel draw bar 14 and lever 19, as well as through the cross bar 5 as shown in Figure 2. The lever 19 preferably consists of superimposed straps arranged in spaced parallel relation and having their forward ends Vdisposed against the upper and lower surfaces of the cross bar 5, with the forward ends of the straps forming the draw bar 14 disposed thereon. In this manner, the single pivotal connection 15 serves to allow swinging movement of the draw bar 14 in a horizontal plane, and at the same time permits a similar movement of the lever 19 independent of the draw bar 14.

The levers 6 have shorter ends projecting rearwardly from the pivot 7 and the cross bar 5 and these shorter ends of the levers 6 are respectively pivotally connected to vthe outer ends of obliquely disposed links 20 and 21 that are disposedrearwardly of the cross bar 5 and have their rearmost inner ends respectively connected to the lever 19 at the rear end of the latter and at a point adjacent to but rearwardly of the pivetal connection l5 of seid lever 19 with the Cross ber 5. rlhus, the link 2() is shorter than the link 2l and disposed et eV more :rente angle to the longitudinal axis of the drew bar ll than the linl: 21, and it is noted that the pivotal connection of the ends of the links 2O and 2l with the lever 19 and lever are preferably provided by forming eyes et the ends of said links and palsing'vertieel'pivot pins therethrough. es -well through the levers 6 sind 1'9 Shown. The linlis Q0' and 2l preleinblT consist of adjustable tie rods composed oli' penH of sections having oppositely threaded adjacent ends connected by a rotatable turn buckle nut, the rotation of .vhieh will el'l'eee e" el'l'enge in the length'ef seid links QOend ln thifs manner, the vrelation ol the leversl 6 and lQfrel'atii/*e lo each other and to the longitudinal exis of the drew bnr may be varied, is found necessary when drelt animals of@ difl'lering)Y size and strength are liitehed' to the single trees l0. A l'u +1her adjustment lier this purpose is lied by providing ineens, as at @idler varyinggr the point-ot pivotal Conneetion between the inner endslolI the link 2l ane the lever 19, so that seid peintV et connection may be varied to e {Tree-ter or less extent to or from The point` olpivot-el eonneetien of the lever ll) Wi i the crees bar 5k.

leundl necessary to' eeeoininedate the viee,.to drmv bers of' different types of iin',- pleinents evenV thoughthe- 'form shown' consists of providing vertically aligned openings inA the rear ends ofthe straps forn'ring d drew bar end' receiving a-'verti'eel holtadepted to he pnssed'throughf a horiznei'ital Connector'. er drew; bar en the implement.

In operation, the rear end of the draw han:

This ineens et ad'uetinent nixi-vv eonsi'st 1n :i loneitud'inelf ille sani- 1 hitched to one of the single treer4 l0. ilpon draft is automatically eque sitesides by reason ol' the operati swinging levers 6 and 19 sind the l neetions therebetween es et 2 swinging movement of' the e l'ieing also utilized through the in 2l for varying the relation o' he Frein the above description, it is l'ielievefi that the eonstr'ueeion and operation the advantages et the invention 'emlilj/.fv understood and a}' i,n'e :io.ted by t skilled in the art.

Minor Changes may be mede .vil'houl departing; from the spirit and scope ot the invention :is claimed.

lllhat l Claiml :is nevvv A draftequeli'cer eflnnpi sing zr relziti."elj,7 longcross ber disposed trenever: v of llie line olf draft, levere pirol'alljv izieL-ntefl :fl the ends of the cross bei' end non posed parallel with the line of dr and outer levers piveted their ends to the intern'iedinte portion C i be r 1d disposed renrvfr.rdl v extending in `he line dre? l tioned levers being piveted et one endV of theerose ber than il link rod pivotelly Connected Wit end portion el' the inner leve Connected et its other end` r the shorter end of the cross bei, :i li

pire-hilly eennee'ed with the inr-.er le 85 e peintbetiveentl-ie.crees bei' end i Y et pvot-el Connection of the lirst iner.V

link; red with the inner lever, end pivot eonneeted with the lever et the. le'`Yr r of the cross bar', the ree-r end portion of the 90 outer lever extending beyond the roer end of the inner lever, and adapted te be con neeted with zr draft appliance.

In testimony whereof I elli); my signature. 

